Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
You can trigger an avalanche on north, northeast, and east-facing slopes at upper elevations. Watch for and avoid wind-drifted snow on steep slopes below ridgelines, on the sides of gullies, and on steep rollovers. You can identify drifted snow by its smooth, rounded appearance or by its hollow sound underfoot. You may not see signs of instability like cracking or collapsing before you trigger an avalanche. Wind-sheltered slopes less than about 35 degrees offer safer travel options.
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